The Tome of Secrets: A Critical Line Puzzle - Solution Revealed!

The Critical Line puzzle solution has been revealed  — though this time, the tome kept its secrets well guarded!

After weeks of decoding coloured grids from that mysterious chamber, we can now reveal the truth.

The solution

The colours helped you to reach the answer — the frequency of each colour was key. Replacing each colour by the digit representing how many times it appeared across the grid brought you a step closer towards the solution, but filling in the blanks required you to decipher another rule defining the grid:

Each row and column forms a 5-digit prime.

From there, it became a game of logic and elimination. With a list of 5-digit primes in hand, the path to the solution required whittling down possibilities until the grid revealed itself.

A tougher puzzle than expected

This puzzle proved particularly challenging — no one cracked the code this time! But don't worry, the $50 prize rolls over. 

The next Critical Line puzzle will offer a $100 voucher to a randomly selected correct solver. Until then, keep those problem-solving skills sharp!